Fischer-Tropsch synthesis catalysed by small TiO2 supported cobalt nanoparticles prepared by sodium borohydride reduction

被引：34
|
作者：
Delgado, Jorge A. [1 ]
Claver, Carmen [1 ,2 ]
Castillon, Sergio [3 ]
Curulla-Ferre, Daniel [4 ]
Ordomsky, Vitaly V. [5 ]
Godard, Cyril [2 ]
机构：
[1] Ctr Tecnol Quim, Tarragona 43007, Spain
[2] Univ Rovira & Virgili, Dept Quim Fis & Inorgan, C Marcelli Domingo S-N, E-43007 Tarragona, Spain
[3] Univ Rovira & Virgili, Dept Quim Analit & Organ, C Marcelli Domingo S-N, E-43007 Tarragona, Spain
[4] Zone Ind Feluy, Total Res & Technol Feluy, B-7181 Seneffe, Belgium
[5] USTL ENSCL EC Lille, Unite Catalyse & Chim Solide, Bat C3, F-59655 Villeneuve Dascq, France
来源：
APPLIED CATALYSIS A-GENERAL | 2016年 / 513卷
关键词：
Fischer-Tropsch synthesis; Cobalt nanoparticles; Sodium borohydride; Titanium oxide; Boron promotion; PARTICLE-SIZE; BORON; NANOCRYSTALS; STABILITY; METAL; DEACTIVATION; REDUCIBILITY; SELECTIVITY; PROMOTION; WATER;
D O I：
10.1016/j.apcata.2015.12.019
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Cobalt nanoparticles in the range of 1.7-7 nm were synthesized in water using sodium borohydride as reducing agent and subsequently immobilized on TiO2. Both colloidal and TiO2 supported NPs were characterized by TEM, XRD, HRTEM, XPS,TGA, ICP techniques and their catalytic performance of the supported catalysts evaluated in the Fischer-Tropsch synthesis. As a general trend, an increase in activity and TOF was observed when the particle size decreased. These results were rationalized by the higher reducibility of the catalysts bearing the smaller nanoparticles. The unconventional stability of these relatively small CoNPs in FTS was attributed to the promoting effect of boron on the stability of the cobalt nanocrystals. (C) 2016 Published by Elsevier B.V.
引用
收藏
页码：39 / 46
页数：8
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